ackuretta 3d printers - ackuretta - quracrown 3d printing resin … · 2018-08-14 · 4.post-curing...
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QuraCROWN 3D printing resin for temporary restorations Version 1.0
QuraCROWN is a biocompatible 3D printing material, developed by Ackuretta Technologies Pvt. Ltd for the
printing of temporary crowns and bridges using high resolution 3D printers. IT has high flexural strength, low
shrinkage and excellent cytocompatibility. It can be used for DLP and SLA 3D printer. The FDA certificate and CE
approval of this material will be applied in 2018.
Procedures for post-processing
1. Printing
Pour QuraCROWN resin into the resin tank of a 3D printer, and import the crown or bridge model into the
3D printer for printing.
2. Washing
Remove the printed crowns or bridges from the build platform and soak in IPA (isopropanol) or 95%
ethanol to remove the extra resin. Use an ultrasonic cleaner if necessary. Please be aware that IPA and
ethanol must NOT be placed directly in the tank of the ultrasonic cleaner.
3. Drying
Ensure the crowns or bridges clean. Do not remain liquid resin or ethanol.
4. Post-Curing
For post-curing, the curing energy and curing time depends on the post-curing unit. For example, a good
surface hardness and biocompatibility can be achieved by 10 minutes of post-curing using a 36W (12W
CCFL + 24W LED) UV curing box at 405nm.
Sterilization
Sterilization of the printed crowns or bridges using 70% ethanol is recommended.
Material Properties
Property Value
Flexural Strength 2330 MPa
Flexural Modulus 89.94 MPa
Hardness 75 Shore D
Viscosity 0.802 Pa·s
Biocompatibility testing (According to EN-ISO 10993-5:2009)
Sample Received Date Result 1:
Morphology
Result 2:
MTT assay
Average Cytotoxicity
QuraCROWN 2018.02.09 0 0 0 None
Cytotoxicity: 0 = None, 0~1 = Slight, 1~2 = Mild, 2~3 = Moderate, 3~4 = Severe.
Extraction medium condition
Sample Received Date Surface Area
(cm2)
Volume of
Extraction
Medium (ml)
Extration Temp
(℃)
QuraCROWN 2018.02.09 6 2 37
Qualitative morphological grading
1. QuraCROWN (0)
2. Negative Control (0)
40X 100X
40X 100X
3. Positive Control (4)
MTT cytotoxicity test
MTT test grading
Sample Cytotoxicity (%) MTT test grading
QuraCROWN -1.25 % 0
Positive
Control
99.29 % 4
Grade: < 10% = 0 10~30% = 1 30~50% = 2 50~70% = 3 > 70% = 4
40X 100X